Organic electroluminescent element, production method of the same, display device, and lighting device

Abstract

An organic electroluminescent element comprising a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth, wherein at least 80% by weight of the organic layer A and the organic layer C in the laminated body is formed via a wet process, and the laminated body is made with an adhesion process between the organic layer A and the organic layer B, or between the organic layer B and the organic layer C.

The invention claimed is: 
     
       1. An organic electroluminescent element comprising a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth,
 wherein at least 80% by weight of the organic layer A and the organic layer C in the laminated body is formed via a wet process, 
 wherein the laminated body is made with an adhesion process comprising adhering a first partially laminated body comprising the cathode substrate having formed thereon the cathode, the organic layer C, and the organic layer B, in this order, onto a second partially laminated body comprising the anode substrate having formed thereon the anode and the organic layer A, in this order, and 
 wherein light emission from the light emitting organic layer B is phosphorescence emission. 
 
     
     
       2. The organic electroluminescent element of  claim 1 , wherein the organic layer B is formed via a transfer method. 
     
     
       3. The organic electroluminescent element of  claim 1 , wherein one of the anode substrate and the cathode substrate is made of a flexible material. 
     
     
       4. A display device comprising the organic electroluminescent element of  claim 1 . 
     
     
       5. A lighting device comprising the organic electroluminescent element of  claim 1 . 
     
     
       6. The organic electroluminescent element of  claim 1 , wherein the organic layer B contains a phosphorescent dopant selected from the group consisting of Ir complexes. 
     
     
       7. An organic electroluminescent element comprising a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth,
 wherein at least 80% by weight of the organic layer A and the organic layer C in the laminated body is formed via a wet process, 
 wherein the laminated body is made with an adhesion process comprising adhering a first partially laminated body comprising the cathode substrate having formed thereon the cathode and the organic layer C, in this order, onto a second partially laminated body comprising the anode substrate having formed thereon the anode, the organic layer A, and the organic layer B, in this order, and 
 wherein light emission from the light emitting organic layer B is phosphorescence emission. 
 
     
     
       8. The organic electroluminescent element of  claim 7 , wherein the organic layer B is formed via a transfer method. 
     
     
       9. The organic electroluminescent element of  claim 7 , wherein one of the anode substrate and the cathode substrate is made of a flexible material. 
     
     
       10. A display device comprising the organic electroluminescent element of  claim 7 . 
     
     
       11. A lighting device comprising the organic electroluminescent element of  claim 7 . 
     
     
       12. The organic electroluminescent element of  claim 7 , wherein the organic layer B contains a phosphorescent dopant selected from the group consisting of Ir complexes.